How do you calculate the Odds Ratio? Use this interactive tutorial to learn and calculate these ratios and more.
A must for those doing research or preparing for exams. There is no easier way to learn statistics.
Fact: The odds ratio is not the same thing as the risk ratio or relative risk! Go back to the calculator, and look again.
Still can’t find it? Ok, here is the trick! Enter large but different numbers in one of the columns, such as 900 exposed and 50 unexposed for the disease group, and the same numbers (eg 500) in the no disease column. Results: OR 18, and RR 7.07!
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